Caliper brake unit for hand trucks



FIG. 1 is a perspective view of a caliper brake unit for hand trucks showing my new design from the top and one end;

FIG. 2 is a perspective view thereof shown from the bottom and opposite end;

FIG. 3 is a perspective view of a second embodiment of the caliper brake apparatus for hand trucks showing my new design from the top and one end; and,

FIG. 4 is a perspective view of the embodiment of FIG. 3 shown from the bottom and opposite end. 

The ornamental design for a caliper brake unit for hand trucks, as shown and described. 